Abrasive tool



A. E. GERRITS ET AL 2,447,327

' mamszvr: TOOL Aug. 17,1948.

2 Sheets-Sheet 1 Filed March 20, 1947 a 6 Fly-1. 0 6.4). a

2 J S r 8 A- Aalr 0.11. E. Gerriis Harvey EQG-y90 Aug. 17, 1948. A. E. GERRITS :rm. 2,447,327

ABRASIVE TOOL Filed March 20, 1947 2 Sheeta Sheet 2 mun"...

. gmwoks Adrian E. Gerrz'i's Harvey E. Gyyd inafter more particularly set 'atented Aug. 17, 1948 ABRASIVE T9015 Adrian E. Gerrits and Harvey E. .Gygi,

Appleton,

:ApplicationiMarch 20,

2 Claims. (01. 51-486) This invention relates more particularly means whereby "thoseuconvcntional ;saws-,'such as hack ..saws.. jeweler?s. saws, copingrsaws buck saws and thelike havingarefplaceable saw blades, are converted into-abrasive or polishi-ngstools without destroying their initial utility or subsequent. usefor, which they were designed.

The primary object of this invention-resides. im;substituting, without, alteration... adaptors-for thezsaw blades of .hackssaws andatl're like-soas-fto extend? :their" utility of the frames or supports therefor to retaining abrasive, burnishing, polishing or other similar elements for application to elements mounted on lathes or otherwise moved by machinery or hand.

Another object of this invention resides in the provision of adaptors for the frames of hack saws and the like adapted to be removably secured to the frames by the saw blade securing means thereof, without alteration, so as to accommodate belts of abrasive, polishing or other similar material.

A further object of this invention resides in the provision of means whereby hack saws, jewelers saws, coping saws, buck saws and the like are converted into abrasive, burnishing and polishing tools so as to permit more eflicient operation of the abrasive material to the work being operated on with the factor of safety to the operator materially enhanced.

A still further object of this invention resides in the combination of a saw frame and adaptors for retaining work engaging material thereon.

Aside from the aforesaid objects, this invention resides in the particular construction of the adaptors.

With these and other objects in view, this invention resides in certain novel features of construction and combination of elements to be hereforth in the specification, illustrated in the accompanying drawings and pointed out in the appended claims and, although the present disclosure depicts our present conception of the invention, the right is reserved to resort to such departures therefrom as come within the spirit of the invention.

In the accompanying drawings of this application;

Fig. l is a side view of the abrasive tool.

Fig. 2 is a plan view thereof.

Fig. 3 is an enlarged sectional View taken approximately on line 3-3 of Fig. 1.

Fig. 4 is an enlarged sectional view taken approximately on line 4-4- of Fig. 2'.

forming a part to abrasive tools. and

Fig. .5 is-a perspective view of one or the; adaptors.

Figure 6 is an enlarged fragmentary viewof an :adaptor mounted upon its supporting; stud.

Figure 7 is an enlarged fragmentary aviewbi thessupportingstud. p

; :Figure 3 is an enlargedfragmentatry view of the. adaptor showing the hole for receiving aa-gsuplportingstud.

In .thepresent illustration of this invention, the: numeral :15 designates. in genera-1.. ama'zabrasive tool; :consisting: "of 'a: substantially m arted U-shape frame 6 originally designed for supporting hack saw blades and herein employed, without alterations, to accommodate adaptors 1 over which are trained endless abrasive or other forms of belts 8 for application against work rotated by lathes or otherwise moved thereagainst, it being within the purview of this invention to so alter the connecting means of the adaptors that they can readily be removably secured to the conventional saw fastening means of all types of saw frames or supports having replaceable blades.

The adaptors 1 herein disclosed consist of elongated cylindrical shells 9, having their peripheries covered by rubber or other suitable linings In which are herein shown as provided with holes and slots H and I2 at their medial points registered with a similarly shaped holes and slots 13 and M in the shells so as to accommodate saw blade securing studs S and pins P carried by the saw frame and thereby retain the adaptors in removable adjustable relation to the frame. Although the adaptors herein disclosed are of cylindrical configuration, they may be of such other shapes as are required in practicing the invention.

In the present disclosure the adaptors 1 are shown as supporting an abrasive belt on opposite sides of their securing studs S, however, the adaptors may be of such lengths as will accommodate a plurality of belts having elected grades of abrasive, burnishing or polishing material thereon.

Where belts having different grades of abrasive, burnishing or polishing materials aflixed thereto are used, the same are preferably arranged on the adaptors to successively operate over the work according to the grade of material thereon, that is, the belt having coarse material thereon will lead those however, application and operation of the belts is optional with the mechanic.

Where this invention is to be practiced with a jig saw blade thereof is removed and replaced of graded finer materials, 7

With this invention fully set forth, it is manifest that means are provided whereby the frames and supports of removable saw blades are adapted abrasive, burnishing and polishing elements and, through the instrumentality of the conventional tension of the abrasive or other work contacting in performing work on different materials Having thus described our invention, what we claim and desire to protect by Letters Patentis:

1. The combination with a substantially inthrough the end portions thereof, opposed adaptors" having openings therethrough at their media] points and in alignment with the openings in the ends of the frame, fasteneing elements slidably extending through the openings in the ends of the frame with their inner ends extending openings in the adaptors and their saw blade adjusting means carried by the frames;

verted U-shaped frame having aligned openings of the other fastener, and laterally spaced endless belts trained over the outer portions of the elements.

5 2. The combination with a substantially U-shaped frame, elongated cylindrical adaptors having rubber linings on their outer peripheries,

10 frame, and laterally spaced work ments supported sides of their medial points.

elements may be regulated to meet requirements ADRIAN E. GERRITS. HARVEY E. GYGI.

REFERENCES CITED 3 The following references are of record in the Number file of this patent:

UNITED STATES PATENTS Name Date Calef Mar. 15, 1892 Dagenais Nov. 5,1912 Brown Jan. 11, 1921' Stovall May 11, 1937 Hardy May 3, 1938 FOREIGN PATENTS Country I Date Italy Jan; 16, 1926 France Sept. 7, 1931 France Feb. 22,1937- 

